Why upgrade? DanT explains SGE from 5.x through 6.2 and beyond
Dan has posted a great overview of how Grid Engine has changed since the version 5.x days, couched in the context of answering the "Why should I upgrade SGE?" questions that often come up.
I won't even excerpt it, the full article is well worth a read:
http://blogs.sun.com/templedf/entry/why_upgrade
XML Feeds